If we can start with you Charlie? The new power units have excited a lot of debate since the beginning of the year. Will you once again briefly take us through the philosophy behind this technology and why F1 believes it was the right time to introduce it?

The following hearing of the International Court of Appeal took place in Paris on Monday 14 April 2014:

Appeal lodged by the Österreichischer Automobil-Motorrad und Touring Club – Oberste Nationale Sportkommission für den Motorsport (ÖAMTC-OSK) on behalf of its licence-holder Infiniti Red Bull Racing against the decision N°56 dated 16 March 2014 of the FIA Stewards of the 2014 Australian Grand Prix counting towards the 2014 FIA Formula One World Championship